Neck pillow



FIG. 1 is a perspective view of an neck pillow.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a left elevation view thereof.

FIG. 4 is a right elevation view thereof.

FIG. 5 is a rear elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Any broken lines in the drawings illustrate portions of the neck pillow that form no part of the claimed design. 

CLAIM I claim the ornamental design for an neck pillow, as shown and described. 